KR890007507Y1 - Colour signals filter circuits of multi-system tv - Google Patents

Colour signals filter circuits of multi-system tv Download PDF

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Publication number
KR890007507Y1
KR890007507Y1 KR2019860015166U KR860015166U KR890007507Y1 KR 890007507 Y1 KR890007507 Y1 KR 890007507Y1 KR 2019860015166 U KR2019860015166 U KR 2019860015166U KR 860015166 U KR860015166 U KR 860015166U KR 890007507 Y1 KR890007507 Y1 KR 890007507Y1
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South Korea
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ntsc
filter
color signal
unit
pal
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KR2019860015166U
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Korean (ko)
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KR880009004U (en
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강영모
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주식회사 금성사
구자학
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/642—Multi-standard receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/06—Transmission systems characterised by the manner in which the individual colour picture signal components are combined
    • H04N11/12—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only
    • H04N11/14—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system
    • H04N11/16—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system the chrominance signal alternating in phase, e.g. PAL-system

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

내용 없음.No content.

Description

다방식 칼라 TV의 색신호 필터 회로Color signal filter circuit of multi system color TV

제1도는 종래의 회로도.1 is a conventional circuit diagram.

제2도는 본 고안의 블럭 구성도.2 is a block diagram of the present invention.

제3도는 본 고안의 회로도.3 is a circuit diagram of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

가 : PAL/NTSC 필터부 나 : NTSC 필터부A: PAL / NTSC filter part B: NTSC filter part

다 : 시스템 제어부 1 : 버퍼C: system control 1: buffer

4 : 벨필터 5,6,7 : 스위칭부4: bell filter 5,6,7: switching part

8 : 시스템 선택부 TR1,TR2: 트랜지스터8: System selector TR 1 , TR 2 : Transistor

L1, L2: 가변코일 및 코일 C1: 콘덴서L 1 , L 2 : Variable coil and coil C 1 : Condenser

R1: 저항R 1 : resistance

본 고안은 다방식 칼라 TV의 색신호 필터회로에 관한 것이다.The present invention relates to a color signal filter circuit of a multi-color color TV.

일반적으로 다방식 칼라 TV의 색신호 필터회로는 각 시스템 별로 각각의 필터회로를 사용하게 되므로써 시스템 마다 색신호 필터를 조정해야만 하는 불편이 따랐다.In general, the color signal filter circuit of the multi-color color TV uses a separate filter circuit for each system, and thus, the inconvenience of having to adjust the color signal filter for each system is incurred.

즉, 제1도에 도시한 바와같이, 버퍼(1)의 a루프(Loop)의 색신호는 각 색신호 필터(2,3,4)를 통하여 각 스위칭부(5,6,7)로 입력되고, 시스템 선택부(8)의 각 방식(PAL/NTSC, NTSC, SECAM)의 제어출력에 의해 각각의 스위칭부(5,6,7)가 동작하여 색신호를 출력하게 되며, 버퍼(1)의 루프(b)에서는 Y신호를 출력하게 되어 있다.That is, as shown in FIG. 1, the color signals of the a loop of the buffer 1 are input to the respective switching units 5, 6, 7 through the respective color signal filters 2, 3, 4, The switching units 5, 6, and 7 operate by the control outputs of the systems PAL / NTSC, NTSC, and SECAM of the system selector 8 to output the color signals, and the loops of the buffer 1 In b), the Y signal is output.

따라서, 예를들어 시스템 선택부(8)에 의해 PAL/NTSC방식이 선택되면 색신호 필터(2)에서는 4.43MHz를 중심으로 한 색 신호 성분만 통과되어 스위칭부(5)로 입력되게 되며, 시스템 선택부(8)의 단자(P)에서는 하이레벨이 출력되므로 스위칭부(5)가 동작되어 PAL/NTSC방식에 따른 4.43MHz 성분의 색신호만 출력되는 것이다.Thus, for example, when the PAL / NTSC method is selected by the system selector 8, the color signal filter 2 passes only the color signal components centered at 4.43 MHz and is input to the switching unit 5, and the system selection is performed. Since the high level is output from the terminal P of the unit 8, the switching unit 5 is operated to output only the color signal of the 4.43 MHz component according to the PAL / NTSC method.

이때, 시스템 선택부(8)의 타단자(S, N)에서는 로우레벨이 출력되고 있으므로, 색신호필터(3)를 통과한 3.58MHz 성분의 색신호와 벨필터(4)를 통과한 SECAM 신호 성분은 통과되지 못하게 된다.At this time, since the low level is output from the other terminals S and N of the system selector 8, the color signal of the 3.58 MHz component passing through the color signal filter 3 and the SECAM signal component passing through the bell filter 4 It will not pass.

그러나, 이러한 종래의 회로에서는 각 시스템이 선택됐을 경우, 이에 따른 각 색신호필터의 조정개소가 3개소로 되어 조정 작업에 불편이 뒤따랐다.However, in such a conventional circuit, when each system is selected, there are three adjustment points of each color signal filter accordingly, resulting in inconvenience in the adjustment work.

본 고안은 이와같은 점에 착안하여 안출한 것으로, 각 시스템 선택에 따른 색 신호 필터의 조정개소를 단일화하여, 조정 및 동작을 원활하게 하려는데 그 목적이 있는 것이다.The present invention has been devised in view of such a point, and its purpose is to make adjustment and operation smooth by unifying the adjustment point of the color signal filter according to each system selection.

이하 첨부도면에 따라 본 고안의 구성을 설명하면 다음과 같다.Hereinafter, the configuration of the subject innovation according to the accompanying drawings.

제2도는 본 고안의 블록구성도로써, 버퍼(1)의 루프(a)의 색신호가 PAL/NTSC 필터부(가)와 NTSC필터부(나)를 통하여 스위칭부(5,6)로 입력되게 접속하고, 또한 벨필터(4)를 통하여는 스위칭부(7)로 입력되게 접속하며, 시스템 선택부(8)의 각 단자(P,N,S)의 출력이 각 스위칭(5,6,7)의 동작 제어 전압으로 인가되게 접속하고, 또한 단자(N,P)의 출력에 의해 시스템 제어부(다)가 PAL/NTSC 필터부(가) 및 NTSC 필터부 (나)를 제어하게 접속하여 구성한다.2 is a block diagram of the present invention, in which the color signal of the loop a of the buffer 1 is input to the switching units 5 and 6 through the PAL / NTSC filter unit and the NTSC filter unit (b). Connected to the switching unit 7 via the bell filter 4, and the outputs of the terminals P, N, and S of the system selector 8 are switched to each of the switching units 5, 6, 7; And the system control unit (C) connects the PAL / NTSC filter unit (A) and the NTSC filter unit (B) by the output of the terminals (N, P). .

제3도는 본 고안 요부의 상세회로도로써, 가변코일(L1), 저항(R1) 및 콘덴서(C1)로 구성되는 4.43MHz용 PAL/NTSC 필터부(가)를 시스템제어부(다)의 트랜지스터(TR1)의 콜렉터에 접속하고, 가변코일(L1), 코일(L2), 저항(R1) 및 콘덴서(C1)로 구성되는 3.58MHz용 NTSC 필터부(나)를 시스템 제어부 (다)의 트랜지스터(TR2)의 콜렉터에 접속하며, 상기 시스템 제어부(다)의 각 트랜지스터(TR1, TR2)의 베이스를 각각 시스템 선택부(8)의 단자(P,N)에 접속하여 구성한다.FIG. 3 is a detailed circuit diagram of the main part of the present invention. The PAL / NTSC filter unit for 4.43 MHz consisting of the variable coil L 1 , the resistor R 1 , and the capacitor C 1 is shown in FIG. The NTSC filter unit ( 3 ) for 3.58 MHz, which is connected to the collector of the transistor TR 1 and composed of the variable coil L 1 , the coil L 2 , the resistor R 1 , and the capacitor C 1 , is a system control unit. (C) is connected to the collector of the transistor (TR 2 ), and the base of each transistor (TR 1 , TR 2 ) of the system control unit (c) is connected to the terminals (P, N) of the system selector (8), respectively. To configure.

이와같이 구성된 본 고안의 작용 및 효과를 설명하면 다음과 같다.Referring to the operation and effects of the present invention configured as described above are as follows.

제3도의 시스템 선택부(8)에서 PAL/NTSC 방식이 선택되면, 그의 단자(P)의 하이레벨 출력이 스위칭부(5)에 동작전원을 공급하게 됨과 동시에, 시스템 제어부(다)의 트랜지스터(TR1)를 턴온시키므로 4.43MHz용 PAL/NTSC 필터부(가)가 동작하여, 버퍼(1)의 루프(a)의 색신호는 PAL/NTSC 필터부(가)의 스위칭부(5)를 직렬로 통하여 출력하게 된다.When the PAL / NTSC system is selected in the system selector 8 of FIG. 3, the high level output of the terminal P thereof supplies the operating power to the switching unit 5, and at the same time, the transistor of the system control unit C. TR 1 ) is turned on so that the 4.43 MHz PAL / NTSC filter unit operates, so that the color signal of the loop (a) of the buffer 1 is connected to the switching unit 5 of the PAL / NTSC filter unit in series. Will output via

이때, PAL/NTSC 필터부(가)의 중심주파수는이 된다.At this time, the center frequency of the PAL / NTSC filter unit Becomes

한편, 시스템 선택부(8)에서 NTSC방식이 선택되면, 그의 단자(N)에서만 하이레벨이 출력되므로 스위칭부(6)와 시스템 제어부(다)의 트랜지스터(TR2)가 턴온되어, 3.58MHz 용 NTSC 필터부(나)가 동작하게 된다.On the other hand, when the NTSC system is selected in the system selector 8, since the high level is output only at the terminal N thereof, the transistor TR 2 of the switching unit 6 and the system control unit C is turned on, so that the 3.58MHz The NTSC filter unit (b) is activated.

따라서, 버퍼(1)의 루프(a)의 색신호는 NTSC 필터부(나)와 스위칭부(6)를 직렬로 통하여 출력되게 되며, 이때 NTSC 필터부(나)의 중심주파수는이 된다.Therefore, the color signal of the loop (a) of the buffer 1 is output through the NTSC filter unit (B) and the switching unit 6 in series, wherein the center frequency of the NTSC filter unit (B) is Becomes

한편, 시스템 선택부(8)에 의해 SECAM방식이 선택되면, 그의 단자(S)에서만 하이레벨이 출력되므로 벨필터(4)를 통한 SECAM' 색신호가 스위칭부(7)를 통하여 출력되는 것이다.On the other hand, when the SECAM method is selected by the system selector 8, since the high level is output only at the terminal S thereof, the SECAM 'color signal through the bell filter 4 is output through the switching unit 7.

이와같은 본 고안은 각 시스템 방식에 따른 각각의 색신호 필터를 단일 색신호필터로서 구성하여 원가절감을 꾀할수 있는 것이고, 특히 조정개소를 일원화시킴으로써 다방식 칼라 TV의 색신호 필터의 조정이 간편하게 되는 효과가 있는 것이다.The present invention can reduce the cost by configuring each color signal filter according to each system type as a single color signal filter, and in particular, the adjustment of the color signal filter of the multi-color color TV can be simplified by unifying the adjustment points. will be.

Claims (1)

가변코일(L1) 및 콘덴서(C1)로 구성되는 PAL/NTSC 필터부(가)와 가변코일(L1),코일(L2) 및 콘덴서(C1)로 구성되는 NTSC 필터부(나)를 시스템 제어부(다)의 각 트랜지스터(TR1, TR2)에 접속하고, 시스템 제어부(다)의 트랜지스터(TR1, TR2)는 시스템 선택부(8)에 의해 제어되게 접속시켜 구성됨을 특징으로 하는 다방식 TV의 색신호 필터회로.PAL / NTSC filter part consisting of variable coil (L 1 ) and condenser (C 1 ) and NTSC filter part consisting of variable coil (L 1 ), coil (L 2 ) and condenser (C 1 ) ) Is connected to each of the transistors TR 1 and TR 2 of the system control unit C, and the transistors TR 1 and TR 2 of the system control unit C are controlled to be controlled by the system selector 8. A color signal filter circuit of a multi-modal TV, characterized in that.
KR2019860015166U 1986-10-02 1986-10-02 Colour signals filter circuits of multi-system tv KR890007507Y1 (en)

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KR2019860015166U KR890007507Y1 (en) 1986-10-02 1986-10-02 Colour signals filter circuits of multi-system tv

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Application Number Priority Date Filing Date Title
KR2019860015166U KR890007507Y1 (en) 1986-10-02 1986-10-02 Colour signals filter circuits of multi-system tv

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KR880009004U KR880009004U (en) 1988-06-30
KR890007507Y1 true KR890007507Y1 (en) 1989-10-26

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